Dockerfile

FROM python:3.9-slim

ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1

WORKDIR /app

# System deps for sklearn / xgboost / numpy
RUN apt-get update && apt-get install -y \
    build-essential \
    gcc \
    libgomp1 \
    && rm -rf /var/lib/apt/lists/*

# Install Python deps
COPY requirements.txt .
RUN pip install --no-cache-dir --upgrade pip \
    && pip install --no-cache-dir -r requirements.txt

# Copy app
COPY . .

EXPOSE 7860

CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]